Car-truck.



C. H. HOWARD & H. M. PFLAGER.

CAR TRUCK.

APPLICATION FILED JUNE 1o, 1912.

Patented May 6,1913.

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C. H. HOWARD L H. M. PPLAGER.

GAR TRUCK.

APPLIGATION FILED JUNI: 1o, 1912.

-our improved construct object of UNITED STATES l PATENT OFFICE.

CLARENCE H. 'HOWARD AND HARRY IM. IIiLAGrEIl., OF ST. LOUIS, MISSOURI, ASSIGNOBS TO COMMONWEALTH STEEL COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION 0F NEW JERSEY.

CARf-TRUCK.

Application filed I une 10, 1912. Serial Nq. 702,744.

To all whom, t mary concern.'

Be it known that we, CLARENCE H. How- ARD- and HARRY M. PFLAGER, citizens of the United States, residing at St. Louis, Mis souri, have invented a certa-in new and useful Improvement in Car-Trucks of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference beingv had to the accompanying dra-wings, forming part of this specification, in which- Figure 1 is a planview of a car truck of en. Fig. 2 is a side eleva-tion of the truck. Fig. 3 is a vertical section taken longitudinally through the center of the truck. Fig. 4 is a transverse section taken approximately on the line 1r-4 of Fig. 1. Fig. 5 is a detail section taken on the line 5-5 of Fig. V1. Fig. 6 is a detail section taken on the 'line 6-6 of Fig. 1.

Our invention relates to a railway car truck of the six wheel type, the principal our invention belng to provide a comparatively simple truck frame wherein the wheel pieces, transoms, and center bolsters are all cast integral, thereby forming a one piece structure having great strengt and rigidity, combined with lightness of weight.

He-retofore in the construction of trucks of the type tov which our invention pertains, it has been the practice to provide truck frames having the wheel pieces and transoms formed in one casting and the center bolster in a separate casting, the latter carried by swing hangers from the transoms, and in our improved constructions these parts, namely the center bolster and the transoms, are formed integralin order to greatly simplify and cheapen the cost of manufacture of the truck frames and pro vide a six wheel truck having a much shorter Wheel base than the type of six wheel truc :s now in general use.

By providing a trame wherein the transoms and center bolster are integral the swing hangers are eliminated and the wheel base of the truck can be materially reduced,

thereby enabling the truck to traverse the.

Specification of Letters Patent;

Patented May e, isis.

- shown anddescribed is of the same general type and is an improvement upon the truck frames shown in U. S. Patents #774,492 and 903,191.

As shown in the accom anying drawing the frame of our improve truck comprises side rails or Wheel pieces 1, end rails 9., transoms 3 and center bolster t all of which parts are formed integral preferably by casting. The wheel pieces 1 are preferably channel shaped in cross section with the horizontal. flanges projecting inwardly and the end pieces 2 which occupy a plane slightly below the plane occupied by the wheel pieces are likewise chan-nel shape in cross section.

The. transoms l3 are preferably channel shape in cross section with their horizontally disposed anges projecting outwardly toward the ends of the truck frame.' The arms or members of the-center bolster a are preferably of I-beam shape in cross section.

It will be readily understood that the various parts just mentioned may be of any desired shapein cross sect-icm' as tor in' The central portions of the transoms 3 are depressed and occupy a plane slightly below the plane occupied by the wheel pieces 1.

The center bolster t is Xshape and the outer ends 'of the arms' thereof are formed integral with the central portions of the transoms 3. This center bolster is slightly arched so that the center bearing 5 formed on top of its central portion occupies substantially the same plane with the top of the wheel pieces 1.

Formed integral with the wheel pieces 1 at the centers thereof are lugs or plates 6, which perform the function of side bearings. Fixed in any suitable manner to the side bars or wheel pieces'and depending therefrom, are pedestals 7 and positioned therein are journal boxes'S which receive the ends of axles 9 provided with the usual Wheels 10. The undersides of the wheel pieces 1 are recessed as designated by 11 immediately above the openings between the jaws of the pedestals in order to accommodate the ends of the equalizing bars 12 which latter are arranged between the journal boxes 8 with their end'portions resting thereupon. Interposed between these equalizing bars and the Wheel pieces 1 are heavy coiled springs 13. In order to reinforce and strengthen Ithe wheel pieces at the points Where the same arerecessed to receive the ends of the equalizing bars, vertically disposed longitudinally extending walls or webs 14 are formed integral with the inner portions of the horizontally disposed webs of said wheel pieces, which webs or walls extend'slightly beyond the ends of said `recesses. Formed on or Xed to the end rails 2 and to one of the transoms 3 are pairs of lugs 15, to which the upper ends of the brake hangers are pivotally connected.

A tie bar or tension member 16 extends longitudinally beneath each series of pedestals 7 and its ends are fixed in any suitable manner .to the end portions of the wheel pieces l. v

A truck :frame of our improved construction is comparatively simple, can be easily and cheaply produced owing tothe fact that its essential parts are formed in a single piece and by forming the center bolster integral with the transoms a comparatively short frame is produced, which construction is particularly desirable in siX wheel trucks, for the reason that a truckv having a comparatively'short wheel base will take curves with much less resistance and will traverse shorter curves than truclrs 'having a comparatively long wheel base.

It will be readily understood that minor` v changes in the size,n form and construction of the various partsof our improved truck can be madeand substituted for those herein shown and described, without departing from the spirit of our invention, the scope of which is set forth in the appended claims,

We claim:

1.A truck frame .of the class described, comprising wheel pieces, a pair of transoms, the central portions of which are depressed with respect to the wheel pieces and a centerbolster connecting the depressed center p0rtions of the transoms all of which parts are cast integral.

2, A Itruck frame, com rising wheel pieces, end rails, transoms, te central portions of which are depressed with respect to the wheel pieces and a center bolster conxnecting the depressed center portions of said transoms all of which parts are formed integral. j

'3. A truck vtrarne comprising wheel pieces, end rails, a pair of transoms, the central portions of which are depressed with respect to the wheel pieces and an )(-shaped center bolster connecting the depressed center portions of said transoms all of which parts arecast integral.-

l. In a car truck, a rectangular frame, a pair of transoms cast integral therewith, the central portions of which transoms are depressed with respect to the said members of the frame, and a substantially X-shaped center bolster connecting the depressed center portions of said transoms.

pieces.

5. A car truck frame comprising wheel pieces, end rails, a pair of transoms, a center bolster connecting the central portions of the transoms, all of which parts are cast integral, and pedestals depending from the wheel pieces between the transoms and between the end rails and transoms.

6. A siX wheel truck frame comprising wheel pieces, a pair of transoms cast i11- tegral therewith, an X-shaped center bolster cast integral with and 'connecting the central portions of the transoms, pedestals depending from the wheel pieces between the transoms and pedest'als depending from the wheel pieces between the transoms and the ends o'said wheelpieces. y

7. A truck frame comprising wheel pieces, transoms cast integral, therewith, lthe central portions of which'are depressed with respect to the wheel pieces, a'. center bolster cast integral with said transoms, pedestals depending from the wheel pieces and the undersides of which wheel ieces are recessed above the openings in t e pedestals. Y

8. In atruckframe of the class described, a pair ot wheel pieces, a -pair of transoms, a center vbolster' connecting the central por' tions of the transoms, all of which parts are castA integraband lside bearing plates integral with the centralportions of the wheel 9. A truck frame comprising wheel ieces, a pair of transoms integral therewith, a center bolster integral with and connecting the centralportions ofthe transolns,l pedestals depending from the wheel pieces between the transoms and between said transoms and the ends ofthe wheel pieces, and

the Vundersidesofl which wheel pieces bey tweenthe pedestals are recessed to aecommodate the ends of the equalizer bars.

l0. A truck frame comprising wheel pieces, end rails, transoms, acenter bolster connecting thecentral portions of said transoms, pairs of 4brake hanger lugs depending from one of the transoms, and pairs ofbrake ioo hanger lugsdepending from the end rails,

all of'which parts are castl integral.

11. A truck frame comprising wheel pieces, end rails, transoms, a center bolster connecting the central portions of said transoms, pairs of brake hanger lugs depending from -one of the transoms, pairs of brake hanger lugs depending from the end rails, and sidebearing plates on the central portions of the wheel pieces, all of which parts are cast integral.

12. In a truck frame of the class described, a pair of wheel pieces, a pair of transoms, the central portions of which are depressed with respect to the wheel pieces, an X-shaped center bolster connecting the depressed central ortions of said transoms, and a center bearing plate on said X-shaped bolster, all of which parts are cast integral.

- wheel pieces,

' izer bars supported by 13. In a truck frame of the class described, a pair of wheel pieces, a pair of transoms, an X-shaped center bolster connectin the central portionsof said transoms, sideeal'- ing members on the central portions of the and a center bearing plate on said X-shaped bolster, all of which parts are castintegral.

14. In a truck' frame of the classdescribed, a pair of wheel pieces, a pair of transoms, pairs of brake hanger lugs projecting from one of said transorns, bolster connecting the central portions of said transoms, side bearing members on vthe central portions of the Wheel pieces, and a center bearing plate on said X-shaped bolster,` all of which parts are cast integral.

15. In a car truck the combination'with a truck frame, comprising Wheel pieces, a pair of transoms and a center bolster connecting the center portions of said transoms, all of which parts are cast integral, ofequalthe journal boxes of the truck, and springs supported directly upon the equalizer bars, and which springs directly support the truck frame.

1G. A car truck frame, comprising wheel pieces, a. pair of transoms, the central poran Xshaped center Y tions of'wh-ich are depressed with respect to said wheelpieces, bolster connectingjthe. central portions of said transoms, and a center bearing on the central ortion of the centervbolster, which center caring occupies substantially the saine horizontal plane with the4 tops of the 'wheel pieces,v all of which parts are 'cast integral. p v

17. In a car truck, an integral truck ,frame com rising wheel pieces, a pair of transolns, t e central portlons of which are depressed with res ect to the wheel pieces, a substantially -X-s aped center bolster con neet-ing the depressed central portions of said transoms, a. center bearin on the center bolster, which bearin' is -suistantially in the same horizontal p ane Withthe tops of the wheel pieces, and side bearing plates on the central portions ofthe wheelpleces.

In testimony vwhereof We hereunto our signatures in the presence of two Witnesses, this 28th da of May, 1912.

CLAR' NGE H. HOWARD. 4HARRY M. PFLAGER.

Witnesses l HAL C. BELLVILLE, M. A. HANDEL.

a substantially X-shaped 

